Pump

8 comments

Rate

P.Nithin Kumar Commentator Join Date: Dec 2010 Location: Hyderabad,Telangana , India Posts: 80 Good Answers: 1	Pump 03/08/2011 9:07 AM
	what are the possible reasons for centrifugal pump to get trip ? __________________ When Emotions runs high ,Intellectual wont work
	Register to Reply

Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

These comments received enough positive votes to make them "good answers".

PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#1 Re: Pump 03/08/2011 11:57 AM
	One possibility is that it is being asked to do too much work. Another is that it has a motor internal fault. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
	Register to Reply

Fezi Member Join Date: Mar 2011 Posts: 7	#7 In reply to #1 Re: Pump 03/11/2011 4:22 PM
	its due to overload, is it with gland or mechanical seal. also check for the sound is it making any noise.
	Register to Reply

TonyS Guru Join Date: Aug 2010 Location: Resting under the Major Oak Posts: 4347 Good Answers: 181	#2 Re: Pump 03/08/2011 4:54 PM
	Over work is the most obvious reason. Followed by mechanical failure of either the pump or motor. __________________ The reports of my death are greatly exaggerated.
	Register to Reply

Hendrik Guru Join Date: Jan 2007 Location: Centurion, South Africa Posts: 3921 Good Answers: 97	#3 Re: Pump 03/09/2011 12:59 AM
	Check and monitor your power supply. OT - I don't think drugs can put a pump on a trip. __________________ Never do today what you can put of until tomorrow - Student motto
	Register to Reply

MACA Power-User Join Date: Feb 2007 Location: Aberdeen, Scotland Posts: 393 Good Answers: 21	#4 Re: Pump 03/09/2011 3:25 AM
	Impeller can get clogged then the motor will draw too much current and trip your MCB or whatever.
	Register to Reply

34point5 Guru Join Date: May 2010 Location: in optimism Posts: 4050 Good Answers: 130	#6 In reply to #4 Re: Pump 03/09/2011 6:13 AM
	Only if it jambs the impeller. A internally clogged impeller delivers less mass flow = takes less HP. Hence, over revving can kill IC pump engines. Basically an electrically driven centrifugal pump must have some physical obstruction/extra drag, preventing/limiting impeller rotation, to kill its motor. A induction of mud could do it. As would seized bearings. As would a failed shaft seal resulting in a motor full of water. As would a rock, or stick, or tangle of string, between casing and impeller. Mind you, motors have to be correctly sized to the pump and appropriate quality. __________________ There is no sin except stupidity. (Oscar Wilde, Irish dramatist, novelist, & poet (1854 - 1900))
	Register to Reply Good Answer (Score 2)

MACA Power-User Join Date: Feb 2007 Location: Aberdeen, Scotland Posts: 393 Good Answers: 21	#8 In reply to #6 Re: Pump 03/18/2011 9:12 AM
	Yes I did mean the impeller shaft rather than the impeller itself (or the space between multi stage impellers getting clogged). In my experience with centrifugal pumps pumping sea water, when the impeller gets internally clogged (if its a closed impeller), then the same material usually causes problems around the seal/shaft area causing increased resistance to turn the impeller=more current drawn by the motor=MCB's tripping. I thought it more appropriate to give a short answer with limited detail as the question was rather open.
	Register to Reply

Codemaster Guru Join Date: Jul 2005 Location: Stoke-on-Trent, UK Posts: 4496 Good Answers: 137	#5 Re: Pump 03/09/2011 6:08 AM
	Because it's been working hard for a long time and its owner thinks it deserves a treat __________________ Give masochists a fair crack of the whip
	Register to Reply Off Topic (Score 5)

These comments received enough positive votes to make them "good answers".

Copy to Clipboard

34point5 (1); Codemaster (1); Fezi (1); Hendrik (1); MACA (2); PWSlack (1); TonyS (1)

	Got Something to Say?
	Ask a Question Start a Discussion

	Aerospace
	BioMech & BioMed
	Chemical & Material Science
	Civil Engineering
	Communications & Electronics
	Education and Engineering Careers
	Electrical Engineering
	General Discussion
	Instrumentation
	Manufacturing
	Mechanical Engineering
	New Technologies & Research
	Software & Programming
	Sustainable Engineering
	Transportation

	Site Directories
	Forum Directory Blog Directory User Group Directory RSS Feeds CR4 Rules of Conduct CR4 FAQ Site Glossary Who's Online (60 right now) Show Members